Sync events
This is a guide that summarizes how to deal with problems related to displaying and synchronizing events.
e.g.
- Events disappear
- iPhone and iPad not syncing
- Slow event sync
- Certain appointments are not displayed
- Unable to connect Google Calendar
minical does not delete or modify your events without permission.
For minical to retrieve your events correctly, they must be properly displayed in the Apple Calendar app.
We have summarized common cases below. Please check the settings and ensure that your events appear correctly in the Apple Calendar app.
1. Is the Sync setting set to "All Events"?
There is a possibility that the sync period of the event in the setting of iOS is shortened, such as the latest one month ago.
Settings Please check the calendar sync settings of the app
- Open the Settings
app
- (For iOS 18 or later) Tap "Apps"
- Tap "Calendar"
- Tap "同步"
- Tap "所有日程"

Reference
If your iCloud Contacts, Calendars, or Reminders won’t sync - Apple Support
Learn what to do if your iCloud Contacts, Calendars, or Reminders aren't appearing on all the devices that you use with iCloud.
2. Is iCloud calendar enabled?
- Open the Settings
app
- Tap your name at the top of the screen *If your iPhone displays Sign in, sign in with your Apple ID.
- Tap "iCloud"
- Tap "See All" (or "Show All")
- Confirm that "iCloud Calendar"
is turned on

3. Calendar account settings
If the external calendar you want to display, such as iCloud, Google Calendar, or Outlook, is not in minical, please check the Settings app settings.
- Open the Settings
app
- (For iOS 18 or later) Tap "Apps"
- Tap "Calendar"
- Tap "Accounts" (Calendar Accounts)
- Tap "Add Account" and follow the instructions to add an external calendar account.
If you already have your account, make sure that "Calendar" is turned on in each account's settings screen.

Reference
Change your Calendar settings on iPhone
In the Calendar on iPhone, add multiple accounts such as iCloud, Google, Microsoft Exchange, and Yahoo. Change default settings and display your calendar in a way that works best for you.
4. Fetch New Data
- Open the Settings
app
- (For iOS 18 or later) Tap "Apps"
- Tap "Calendar"
- Tap "Accounts" (Calendar Accounts)
- Tap "Fetch New Data"
- Confirm that the "FETCH" at the bottom of the screen is set to "Automatically"

If your events are slow to sync, turn on Push. Compared to fetch, battery life is worse, but events can be synced faster.

5. Forced reload with Apple Calendar app
Even if the synchronization settings are correct, it is rare that the synchronization is not performed correctly. You may be able to solve the problem by forcibly reloading the Apple Calendar app.
- Open the Apple CalendarFRI25app
- Tap "Calendars" at the bottom of the screen
- Pull the screen down to refresh
6. Permission to access the calendar
- Open the Settings
app
- (For iOS 18 or later) Tap "Apps"
- Tap minical
- Make sure Calendars is turned on (Full Access if using iOS 17+)

7. Display settings in minical
Please check if the calendar display setting is enabled in minical.
- Open the minical
app
- Tap the Calendar
button at the top right of the screen
- Confirm that a check is on the left side of the calendar you want to display.
8. Restart your device
9. Update minical
Please check if the latest version of minical is installed on the App Store.
10. If you can't solve the problem
minical gets the same appointments as the Apple Calendar. In order to isolate the cause, please check if the event is displayed in the Apple Calendar app.
If there are no events in the Apple Calendar app
It is not a problem of minical, but there may be a problem with the collaboration between the calendar service where the appointment is saved and iOS. By default, minical's appointments are stored in iCloud (unless it is linked with Google Calendar, etc.). Please check the support site of each company of the linked calendar service.
- iCloud(Apple): If your iCloud Contacts, Calendars, or Reminders won’t sync
- Google Calendar/Gmail(Google): Google Calendar Help
- Outlook、Exchange(Microsoft): Microsoft Support
In iOS 18, there have been reports that event data saved in iCloud Calendar is disappearing in both Apple’s Calendar app and third‐party apps that sync with iCloud Calendar.
If iCloud Calendar data is erased due to an issue on Apple’s side, minical will not be able to retrieve events from iCloud Calendar. Since we do not store your event data, we are unable to restore lost events.
How to Check Your iCloud Calendar Data
Instead of checking on your iPhone, open the iCloud Calendar website from your iPad or computer to verify whether your iCloud Calendar data still exists.
How to Contact Apple
If your iCloud Calendar data is missing, we recommend contacting Apple Support, which manages iCloud Calendar.
Apple Support:
https://support.apple.com/en-us/contact
*Apple Support app allows you to chat with an Apple representative.